Improvement in the manufacture of shot



JQ we@ dnited -WILLIAM GLASGOW, JR., AND JOIN G. WOOD, OF ST. LOUIS, MIS- SOURI.

Letters Patent No. 83,152, dated October 20, 1868.

The Schedule referred to in these Letters Patent and making part of theame.

To all whom it may concern Be it known that we, WILLIAM GLASGOW, Jr., and J ons G. Woon, of St. Louis, in the count-y of St. Louis, and State of Missouri, ha Ye invented anew and useful Improvement in the Maniu'actru'e of Shot; and we. do hereby declare that the following is a full, clear,

and exact description thereof, which will enable others skilled in theart to make and use the same, reference being had to the accompanying drawings, forming part of this specification. The object of thisinvention is to do away with the lofty towersnow nsed in :he nia-mu'acture of shot, .which is accomplished by dropping the lead tln'ough a denser medium than air, such as mercury, glycerine, sirups, oils, Svc., the temperature Aand density of which will be regulated according to the lsize of shot to be made.

The object of lofty towers' is to give the shot time to form and cool during its descent through the air, and

as the large, shot requires much longer time toy cool .v

than the small, the'tower for their manufacture must necessarily beproportionately higher, the largest shotrequiring a height of about a hundred and iifty feet, while by our method it will only require a fall of about fifteen feet, the construction and operationof which will be understood from the following, reference being had to the accompanying drawing, 'liiclrl'epresents a 'sectional elevation ofour apparatus. g

The letter a represents a cylinder-or tube of metal or other material, standing perpendicular, with 'a branch tube, b, extending from its base upward, at an angle of about thirty degrees.

c represents an annular charcoal-furnace, constructed so as to slide up or down on the outside of the tube a, for the purpose of heating the liquid or liquids contained therein at or near'the surface, to a temperature as near as possible equal to that of the molten lead, the object being for the purpose of preventing the lead-from being chilled too suddenly. l,

The tube is filled with oil, glycerine, or other suitable lluids, which are kept hot at the top by means of the adjustable charcoal-furnace c, thus allowing the iead, which is poured through a suitable sieve, f, into the tube, to be cooled gradually by first striking the hot fluid near the furnace at'the top, land sinking gradually into the cool uid below.

The shot is caught in the ladle das it falls down the tube, and is drawn out .through the branch-tube b with its load of shot.

XVe do not limit ourselves tothe use of a ladle for catching anddrawing the shot out of the tube, but We propose using an endless band, with scoops or buckets attached, as clearly shown in red outline in the accompanying (ham'ng. These scoops discharge themselves on the pan c, which loads into a suitable hopper.

We do not consider it necessary that we should here specify any particular' means for adjusting the furnace, as it is obvious that various methods may be employed for the purpose, which will readily suggest themselves to the builder'.

lVe prefer, however, in constructing the ame, to exi tend its central portion, as seen at g, and provide the same with thumb-screws, to Work against the tube a. Having described our invention, lVe claim yas new,'and desireto secure by Letters Batenv 1. The method herein described of producing shot, consisting substantially in dropping the metal, in. a

'molten state, through a column. of glycerine, oil, or

other 'similar fluid, instead of air.

2.' The heating of said column at or nea-r the-top, so that the molten shot shall first impinge upon the heated portion of the medium, and be quickly cooled by its' `descent into the cooler portion of the saine.

3. The employment of Van adjustable heating-apparatus, so arranged and operating' as to impart heattd any desired part of the cooling-column, substantially as and for the purposeset forth.

' 4. lThe construction of the cooling-reservoir with a lateral branch for the withdrawal of the shot, substantially as herein shown and described. Y

`WILLIAM GLASGOW, JR.V JOHN- G. WOOD. Witnesses:

WM'. H. SIMMONS, Tnos. B. Unnnnwoon. 

